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STD Bluetooth Controlled 8x8 LED Matrix Sign Board Display using Arduino and Android App
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License: Public Domain
Description
In this project we build a Bluetooth controlled Sign board using an [8x8 Matrix Display](https://components101.com/displays/8x8-led-matrix-module). A unique feature of this project is its android application which allows the user to control all the 64 LEDs individually from the mobile phone. This enables the user to create custom designs with ease and display it on the LED display. For the complete project details and DIY instructions, check out [this tutorial](https://circuitdigest.com/microcontroller-projects/arduino-based-bluetooth-controlled-sign-board-circuit-on-pcb).
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity | Mounted |
|---|---|---|---|---|---|
| 1 | LMN2088BU Dot Matrix Display | LED1 | DISP_8X8_MATRIX_2020 CIRCUITDIGEST | 1 | Yes |
| 2 | MAX7219 | U1 | DIL24 | 1 | Yes |
| 3 | 20k | R1 | AXIAL-0.3 | 1 | Yes |
| 4 | Arduino Pro Mini | U2 | ARDUINO PRO MINI DEEK-ROBOT | 1 | Yes |
| 5 | HC-05_Bluetooth | U3 | HC-05_BLUETOOTH | 1 | Yes |
| 6 | DC JACK | IN_+12V | DC JACK (123) | 1 | Yes |
| 7 | 4052G-P16-R | MC1405 | TSSOP-16 | 1 | Yes |
| 8 | LEDOrange orange 3AO4UD | LED | LED-3MM | 1 | Yes |
| 9 | TactileSwitch | PB1,PB2 | TACTILESWITCH | 2 | Yes |
| 10 | 1k | R2,R3,R4,R5,R6,R7,R9 | AXIAL-0.3 | 7 | Yes |
| 11 | 470R | R8 | AXIAL-0.3 | 1 | Yes |
| 12 | 2.2k | R11 | AXIAL-0.3 | 1 | Yes |
| 13 | 1.5k | R10 | AXIAL-0.3 | 1 | Yes |
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